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Round|Lab Grown|IGI

1.01ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG818658551

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818658551

Diamond specifications and retailer prices

From £192 GBP
$256 USD
As of October 28, 2026
Save £882 GBP (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,074 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.01ct lab-grown round diamond

This 1.01ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818658551 or 818658551. Listed at 19 retailers as of October 28, 2026, with prices from £192 to £1,074, a £882 spread on the same certified stone. Brilliant Earth lists it at £1,074. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.01
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658551
Dimensions6.45 × 6.48 × 3.91 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.45 mm6.48 mm1.01 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658551
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £401 GBP|Low: £192 GBP|High: £1,014 GBP|Avg: £531 GBP|-4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 2£192 GBP
Retailer 5£224 GBP
Retailer 10£302 GBP
Retailer 9£347 GBP
Retailer 7£357 GBP
Retailer 14£361 GBP
Retailer 13£367 GBP
Retailer 1£401 GBP
Retailer 3£465 GBP
Retailer 11£690 GBP
Retailer 4£727 GBP
Retailer 6£751 GBP
Retailer 8£861 GBP
Retailer 12£967 GBP

28 data points across 14 retailers

19 retailers£192 GBP to £1,074 GBP

Retailer 1
-
£180 GBP
$240 USD
Price last confirmed 19 days ago
A
Retailer 2
-
£192 GBP
$256 USD
View
Final sale: no returns
Retailer 3
-
£210 GBP
$279 USD
View
Price last confirmed 20 days ago
A
Retailer 4
-
£224 GBP
$298 USD
View
Retailer 5
-
£224 GBP
$298 USD
View
Price last confirmed 27 days ago
A
Retailer 6
-
£302 GBP
$402 USD
View
A
Retailer 7
-
£347 GBP
View
A
Retailer 8
-
£357 GBP
€453 EUR
View
A
Retailer 9
-
£361 GBP
$481 USD
View
A
Retailer 10
-
£367 GBP
ZAR 7,904 ZAR
View
A
Retailer 11
-
£401 GBP
View
B+
Retailer 12
-
£465 GBP
$619 USD
View
B
Retailer 13
-
£690 GBP
$919 USD
View
Retailer 14
-
£719 GBP
$957 USD
View
Price last confirmed 26 days ago
B+
Retailer 15
-
£727 GBP
$968 USD
View
B+
Retailer 16
-
£751 GBP
$1,000 USD
View
B+
Retailer 17
-
£861 GBP
View
B
Retailer 18
-
£967 GBP
$1,288 USD
View
Most Expensive
B
Brilliant Earth
21694463A · Oct 29
£1,074 GBP
$1,430 USD
View
18 more retailers have this diamond
Prices start from £192 GBPSave up to £882 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.01ct Round
£192 GBP